The flesh of cucumbers is primarily composed of water but also contains vitamin C and caffeic acid, both of which help soothe skin irritations and reduce swelling—which is why cucumbers are often used to help swollen eyes and sunburn.

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Hydrating Food: Cucumber

The flesh of cucumbers is primarily composed of water but also contains vitamin C and caffeic acid, both of which help soothe skin irritations and reduce swelling—which is why cucumbers are often used to help swollen eyes and sunburn.

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Hydrating Food: Mixed Greens Salad

Most lettuce greens contain 94 percent water, making it a low-energy density food. In other words, you'll feel fuller on fewer calories and lose weight faster.

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Hydrating Food: Tomato Sauce

It may vary depending on the brand, but most store-bought tomato sauces are about 90 percent water. Plus, one half-cup serving of tomato sauce has only 50 calories and zero grams of fat, while the same amount of creamy Alfredo sauce weighs in around 200 calories and 18 grams of fat.

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Hydrating Food: Chicken Noodle Soup

This flu-fighting formula can seriously hydrate you when you need it. Each cup has about 840 milligrams of sodium to help you retain the broth and 14 grams of carbohydrates to help you absorb it.

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Hydrating Foods: Eggplant

Eggplants have all the qualities of an excellent weight-loss food: They're high in fiber and water but low in calories. Just avoid recipes that involve frying. Eggplant's spongy texture means it will absorb a lot of oil and as a result, negate the calorie advantage.

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Hydrating Food: Applesauce

Stick with unsweetened, natural applesauce. Some store-bought brands are packed with added sugars or high-fructose corn syrup, which increases the calorie count.

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Hydrating Food: Zucchini

With 95 percent water by weight, Zucchini is one of the most hydrating vegetables you can eat. A healthy serving has less than 25 calories and is an excellent source of folate, potassium, and vitamins A and C.

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Hydrating Food: Cantaloupe

Even though this popular melon is 90 percent water, it's still packed with refreshingly rich flavor—for just 56 calories per cup. One cup of cantaloupe also provides 103.2 percent of the daily value for vitamin A.

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Hydrating Food: Popsicle

Popsicles not only induce nostalgia for the carefree summer days of your childhood, they also refill your fluids (let it melt in a bowl if you're skeptical), cool you down after an intense workout, and boost your energy (thanks to the carbs).

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Hydrating Food: Watermelon

A 2009 study at the University of Aberdeen Medical School found that the combination of salts, minerals and natural sugars in some fruits and vegetables can actually hydrate people more effectively than water or even sports drinks. Watermelon was on top of the list, thanks to its 92 percent water content and essential rehydration salts calcium, magnesium, potassium and sodium.

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Hydrating Food: Bell Peppers

Colorful bell peppers are 92 percent water, yet they're still rich sources of some of the best nutrients available, including vitamin C, thiamine, vitamin B6, beta carotene, and folic acid.

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Hydrating Food: Pear

Beyond their sweet, refreshing taste, one medium pear contains 6 grams of dietary fiber, or 24 percent of the daily recommended value. Plus, the type of fiber found in pears (soluble fiber) helps you feel full for a longer period of time, which means it can help you lose weight.

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Hydrating Foods: Romaine Lettuce

It may have slightly less water than iceburg lettuce, but romaine contains 3 times more folate, 6 times more vitamin C, and 8 times the beta-carotene. Use it as a sturdy base for more substantial salads.

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Hydrating Food: Pineapple

This exceptionally juicy fruit is packed with bromelain, a mixture of compounds with potent anti-inflammatory powers. In other words, eat pineapple now and you may avoid pain meds in the future.

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Hydrating Food: Carrots

Carrots contain about 87 percent water and more of the powerful antioxidant beta-carotene than any other vegetable or fruit. Studies have found that compounds in carrots help protect again skin, lung and oral cavity cancers.

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Hydrating Food: Mango

Mangoes provide a lot of bang for your caloric buck (only 135 calories per mango), and they're a good source of vitamins A, B6, and C, plus fiber.

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Hydrating Food: Apple

You've heard it before: An apple a day keeps the doctor away. But this juicy superfood has also been linked to lower cholesterol levels, weight loss and preventing a host of chronic health woes—cardiovascular disease, asthma, diabetes, and even certain cancers.

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Hydrating Food: Grapefruit

According to researchers at Scripps Clinic in California, the chemical properties of grapefruit lower insulin levels and help control appetite, which can lead to weight loss. Try adding half a grapefruit to your breakfast or drink a glass of freshly squeezed grapefruit juice any time of day.

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Hydrating Food: Yogurt

When you become dehydrated, your body loses electrolytes in addition to water. Since yogurt has a substantial amount of potassium and sodium, it can help replace the lost electrolytes and re-energize your body.

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Hydrating Food: Strawberries

Make a habit of snacking on these hydrating berries (they're 92 percent water). Studies show that people who eat one serving of strawberries per day tend to have higher blood levels of the B vitamin folate, which helps keep arteries clear. Go ahead and splurge for organic. According to a 2010 study from Washington State University, organic strawberries are more nutritious and flavorful than those that are grown through chemical-laden farming.

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Hydrating Food: Navel Orange

Oranges are juicy (87 percent water), sweet and packed with more than 100 percent of the daily recommended value for vitamin C. That's more than enough to negate the annoyance of peeling!

Raspberries deliver more fiber (8 grams per cup) than any other commonly consumed berry. Plus, they're packed with ellagic acid, a powerful antioxidant that is thought to help prevent and fight cancer (particularly skin, breast, lung, bladder and oesophagus).

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Hydrating Food: Celery

Crunchy celery is 96 percent water, but it also provides a combination of mineral salts, amino acids and vitamins that research shows may hydrate your body twice as effectively as a glass of water.

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Hydrating Food: Wild Blueberries

Is there anything blueberries can't do? Studies have linked this superfruit to everything from cancer prevention and better heart health, to anti-aging and improved eyesight.

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Hydrating Food: Raw Spinach

At seven calories per cup, hydrating spinach is undeniably a great food to fill up on when you want to lose weight. One cup provides more then 50 percent of your daily vitamin A needs, as well as being high in protein and vitamin C.

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Hydrating Food: Red Seedless Grapes

Stay hydrated by snacking on red seedless grapes, or try adding them to salads and yogurt. Among other things, the skins of red grapes contain resveratrol, a powerful antioxidant that has been shown to reduce risk for heart disease.

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Hydrating Food: Tomato

Tomatoes are composed of about 95 percent water. That means that along with signature sweetness comes enough moisture to cut back on (or take the place of) higher-calorie condiments on your sandwich.

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Hydrating Food: Gelatin Dessert (Jell-O)

Sugar-free Jell-O is low in calories, sweet, and refreshing—perfect for combating sugar cravings when you're trying to lose weight.

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Hydrating Food: Kiwi

One large, juicy kiwi has only 56 calories and 20 percent more vitamin C than an orange.

These healthy snacks not only replenish your fluids, they deliver other body benefits too